Is this running on Windows 2003 Server? When this behavior happens,
open task manager and add the "NP Pool" column. Is this number high
such as 800K, 1000K, 2000K? You might be experiencing what only a few
people have been reporting to Sun: the Non-Paged Pool leak in Windows
2003 Server TCP/IP stack.
http://docs.sun.com/app/docs/doc/819-3666/gawlz?a=view
Win2003 only: Non-paged pool leak memory, breaking tcp stack and
richaccess test (6575349)
Description
*(Windows 2003 only)* There are memory leaks on Windows 2003 systems
when performing rich access functions. The problem occurs because the
Win32 nonpaged pool keeps growing, eventually bringing down the entire
TCP/IP stack. Once the failure happens, the TCP/IP stack is left in an
recoverable state, and the only way restore it is by rebooting the
Windows 2003 system.
Workaround
There are two workarounds to this issue.
1.
Use Grizzly blocking mode by configuring the domain.xml
http-listener attribute, blocking-enabled="true" or add the
following http-listener property:
<property name="blocking" value="true"/>
2.
Use Windows Vista or Windows XP.
The workaround and Microsoft patches do not work. We've resorted to
restarting the app server once a week, now we're doing it twice a
week. We are considering changing the OS.
Ryan
glassfish_at_javadesktop.org wrote:
> I have a war file deployed on Sun Java System Application Server 9.1 (build b58g-fcs)
> . This application serves out large amounts of data (around 6MB max per request) to clients via a servlet. I am finding that after a period of time the machine simply stops responding to requests. I know the application is still running because I have background threads that continue to make log entries. It's exactly as though the server is not being hit. I have used jmap to confirm that there is sufficient memory left on the heap. Can anyone recommend ways to diagnose such a problem?
>
> On a related note, is there a way to turn on request logging in Glassfish that gives similar data to IIS logs in Windows? I need to know that a) requests are reaching the server, and b) the IP addresses of clients that are making requests.
>
> Thanks
>
> Kevin
> [Message sent by forum member 'kevinmacdonald' (kevinmacdonald)]
>
> http://forums.java.net/jive/thread.jspa?messageID=271589
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe_at_glassfish.dev.java.net
> For additional commands, e-mail: users-help_at_glassfish.dev.java.net
>
>
>